STEP POWER power supplies - for building technology
Due to their design, the flat power supplies are particularly suitable for distribution boards and flat control panels. The power supply units are available with 24 V DC output voltage in various performance classes and overall widths as well as special voltages 5, 12, 15, and 48 V DC. Their high degree of efficiency and low standby losses ensure a high level of energy efficiency.
STEP-PS/277AC/24DC/3.5
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Power supply
2904945
DIN rail power supply unit 24 V DC/3.5 A, primary switched-mode, 1-phase.
Product details
| AC operation | |
| Nominal input voltage range | 100 V AC ... 277 V AC |
| Input voltage range | 85 V AC ... 305 V AC |
| Voltage type of supply voltage | AC |
| Inrush current | < 40 A (typical) |
| Inrush current integral (I2t) | < 2.8 A2s |
| AC frequency range | 45 Hz ... 65 Hz |
| Frequency range DC | 0 Hz |
| Mains buffering time | typ. 25 ms (120 V AC) |
| typ. 160 ms (277 V AC) | |
| Current consumption | 1.43 A (120 V AC) |
| 0.75 A (277 V AC) | |
| Nominal power consumption | 147.7 VA |
| Power factor (cos phi) | 0.64 |
| Typical response time | < 0.5 s |
| Input fuse | 4 A (slow-blow, internal) |
| Permissible backup fuse | B6 B10 B16 |
| Recommended breaker for input protection | 6 A ... 16 A (Characteristics B, C, D, K) |
| DC operation | |
| Input voltage range | 95 V DC ... 250 V DC |
| Voltage type of supply voltage | DC |
| Efficiency | > 88 % (for 277 V AC and nominal values) |
| Output characteristic | U/I |
| Nominal output voltage | 24 V DC ±1 % |
| Setting range of the output voltage (USet) | 22.5 V DC ... 25 V DC (> 24 V DC, constant capacity restricted) |
| Output current Imax | 6 A |
| Nominal output current (IN) | 3.5 A (-25 °C ... 55 °C) |
| Derating | 55 °C ... 70 °C (2.5 %/K) |
| Feedback voltage resistance | ≤ 35 V DC |
| Protection against overvoltage at the output (OVP) | < 35 V DC |
| Control deviation | < 1 % (change in load, static 10 % ... 90 %) |
| < 2 % (change in load, dynamic 10 % ... 90 %) | |
| < 0.1 % (change in input voltage ±10 %) | |
| Residual ripple | < 10 mVPP (20 MHz) |
| Output power | 84 W |
| Peak switching voltages nominal load | < 30 mVPP (20 MHz) |
| Maximum no-load power dissipation | < 0.6 W |
| Power loss nominal load max. | 11.5 W |
| Rise time | < 0.5 s (UOUT (10 % ... 90 %)) |
| Connection in series | yes |
| Input | |
| Connection method | Screw connection |
| Conductor cross section, rigid min. | 0.2 mm² |
| Conductor cross section, rigid max. | 2.5 mm² |
| Conductor cross section flexible min. | 0.2 mm² |
| Conductor cross section flexible max. | 2.5 mm² |
| Conductor cross section AWG min. | 24 |
| Conductor cross section AWG max. | 12 |
| Stripping length | 6.5 mm |
| Screw thread | M3 |
| Tightening torque, min | 0.5 Nm |
| Tightening torque max | 0.6 Nm |
| Output | |
| Connection method | Screw connection |
| Conductor cross section, rigid min. | 0.2 mm² |
| Conductor cross section, rigid max. | 2.5 mm² |
| Conductor cross section flexible min. | 0.2 mm² |
| Conductor cross section flexible max. | 2.5 mm² |
| Conductor cross section AWG min. | 24 |
| Conductor cross section AWG max. | 12 |
| Stripping length | 6.5 mm |
| Screw thread | M3 |
| Tightening torque, min | 0.5 Nm |
| Tightening torque max | 0.6 Nm |
| Types of signaling | LED |
| Operating voltage display | Green LED |
| Signal output: LED status indicator | |
| Status display | "DC OK" LED green |
| Note on status display | UOUT > 21.5 V: LED lights up |
| Number of phases | 1 |
| Insulation voltage input/output | 4 kV AC (type test) |
| 3.75 kV AC (routine test) | |
| 3.75 kV AC (routine test) | |
| 4 kV AC (type test) |
| Product type | Power supply |
| Product family | STEP POWER |
| MTBF (IEC 61709, SN 29500) | > 1094000 h (40 °C) |
| Insulation characteristics | |
| Protection class | II |
| Overvoltage category | III |
| Degree of pollution | 2 |
| Width | 90 mm |
| Height | 90 mm |
| Depth | 61 mm |
| Horizontal pitch | 5 Div. |
| Installation dimensions | |
| Installation distance right/left | 0 mm / 0 mm |
| Installation distance top/bottom | 30 mm / 30 mm |
| Mounting type | DIN rail mounting |
| Assembly note | alignable: 0 mm horizontally, 30 mm vertically |
| Mounting position | horizontal DIN rail NS 35, EN 60715 |
| With protective coating | no |
| Housing material | Plastic |
| Housing material | PC |
| Foot latch material | POM (Polyoxymethylene) |
| Ambient conditions | |
| Degree of protection | IP20 |
| Ambient temperature (operation) | -25 °C ... 70 °C (> 55° C derating : 2.5%/K) |
| Ambient temperature (storage/transport) | -40 °C ... 85 °C |
| Climatic class | 3K3 (in acc. with EN 60721) |
| Max. permissible relative humidity (operation) | ≤ 95 % (at 25 °C, non-condensing) |
| Shock | 18 ms, 30g, in each space direction (according to IEC 60068-2-27) |
| Vibration (operation) | < 15 Hz, amplitude ±2.5 mm (according to IEC 60068-2-6) |
| 15 Hz ... 150 Hz, 2.3g, 90 min. | |
| Rail applications | EN 50121-4 |
| Standard – Electronic equipment for use in electrical power installations and their assembly into electrical power installations | EN 50178/VDE 0160 (PELV) |
| Standard – Limitation of mains harmonic currents | EN 61000-3-2 |
| Standard - Electrical safety | IEC 62368-1 (SELV) |
| Standard – Protection against shock currents, basic requirements for protective separation in electrical equipment | EN 50178 |
| Standard – Safety extra-low voltage | IEC 62368-1 (SELV) und EN 60204-1 (PELV) |
| Standard - Safe isolation | DIN VDE 0100-410 |
| Standard - Safety of transformers | EN 61558-2-16 |
| UL approvals | UL/C-UL listed UL 508 |
| UL/C-UL Recognized UL 60950-1 | |
| NEC Class 2 as per UL 1310 | |
| Conformity/Approvals | |
| SIL in accordance with IEC 61508 | 0 |
| Electromagnetic compatibility | Conformance with EMC Directive 2014/30/EU |
| Low Voltage Directive | Conformance with Low Voltage Directive 2014/35/EC |
| EMC requirements for noise emission | EN 61000-6-3 |
| EN 61000-6-4 | |
| EMC requirements for noise immunity | EN 61000-6-1 |
| EN 61000-6-2 | |
| Electrostatic discharge | |
| Standards/regulations | EN 61000-4-2 |
| Electrostatic discharge | |
| Contact discharge | 6 kV (Test Level 3) |
| Discharge in air | 8 kV (Test Level 3) |
| Comments | Criterion B |
| Electromagnetic HF field | |
| Standards/regulations | EN 61000-4-3 |
| Electromagnetic HF field | |
| Frequency range | 80 MHz ... 1 GHz |
| Test field strength | 10 V/m |
| Frequency range | 1 GHz ... 2 GHz |
| Test field strength | 10 V/m |
| Frequency range | 2 GHz ... 3 GHz |
| Test field strength | 10 V/m |
| Comments | Criterion A |
| Fast transients (burst) | |
| Standards/regulations | EN 61000-4-4 |
| Fast transients (burst) | |
| Input | 4 kV (Test Level 4 - asymmetrical) |
| Output | 2 kV (Test Level 3 - asymmetrical) |
| Comments | Criterion B |
| Surge voltage load (surge) | |
| Standards/regulations | EN 61000-4-5 |
| Surge voltage load (surge) | |
| Input | 2 kV (Test Level 3 - symmetrical) |
| 4 kV (Test Level 4 - asymmetrical) | |
| Output | 1 kV (Test Level 2 - symmetrical) |
| 0.5 kV (Test Level 1 - asymmetrical) | |
| Comments | Criterion B |
| Conducted interference | |
| Standards/regulations | EN 61000-4-6 |
| Conducted interference | |
| Frequency range | 10 kHz ... 15 kHz |
| 10 kHz ... 15 kHz | |
| Comments | Criterion A |
| Criterion A | |
| Voltage | 3 V (Test Level 2) |
| 3 V (Test Level 2) | |
| Conducted interference | |
| Frequency range | 10 kHz ... 15 kHz |
| 10 kHz ... 15 kHz | |
| Comments | Criterion A |
| Criterion A | |
| Voltage | 3 V (Test Level 2) |
| 3 V (Test Level 2) | |
| Voltage dips | |
| Standards/regulations | EN 61000-4-11 |
| Emitted interference | |
| Standards/regulations | EN 61000-6-3 |
| Radio interference voltage in acc. with EN 55011 | EN 55011 (EN 55022) class B used in industry and residential area / EMC 1 |
| Emitted radio interference in acc. with EN 55011 | EN 55011 (EN 55022) class B used in industry and residential area / EMC 1 |
| Item number | 2904945 |
| Packing unit | 1 pc |
| Minimum order quantity | 1 pc |
| Sales key | H1 - Power supply units |
| Product key | CMPS93 |
| GTIN | 4046356903875 |
| Weight per piece (including packing) | 396,5 g |
| Weight per piece (excluding packing) | 379 g |
| Customs tariff number | 85044095 |
| Country of origin | VN |
ECLASS
| ECLASS-13.0 | 27040701 |
| ECLASS-15.0 | 27040701 |
ETIM
| ETIM 9.0 | EC002540 |
UNSPSC
| UNSPSC 21.0 | 39121000 |
| EU RoHS | |
| Fulfills EU RoHS substance requirements | Yes |
| Exemption | 6(c), 7(c)-I |
| China RoHS | |
| Environment friendly use period (EFUP) |
EFUP-25
An article-related China RoHS declaration table can be found in the download area for the respective article under "Manufacturer declaration". For all articles with EFUP-E, no China RoHS declaration table issued and required.
|
| EU REACH SVHC | |
| REACH candidate substance (CAS No.) | Lead (CAS: 7439-92-1) |
| SCIP | a73483c2-20ce-4947-add3-4ab2dffd74ac |
| EF3.0 Climate Change | |
| CO2e kg | 10,724 kg CO2e |
Compatible products
Your advantages
Flexible mounting by simply snapping onto the DIN rail or screwing onto a level surface
Reliable power supply thanks to high MTBF (mean time between failures) of more than 500,000 hours and U/I characteristic curve
Energy savings thanks to maximum energy efficiency and incredibly low idling losses
Phoenix Contact GmbH & Co. KG
Flachsmarktstraße 8, D-32825 Blomberg